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Yamaha C 450 manual

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Table of contents for the manual

  • Page 1

    POWER AMPLIFIER Owner’s Manual Mode d’emploi Bedienungsanleitung Manual de instrucciónes TEMP PROTECTION POWER ON OFF AB CLIP SIGNAL M[...]

  • Page 2

    Intr oduction Thank you for purchasing a Yamaha C450/320/160 series power amplifier. This series of audio amps was developed from Yamaha's wealth of experience in building PA equipment and its tradition of careful attention to every detail of circuit design. These amps feature high power and superb quality together with superior reliability an[...]

  • Page 3

    Precautions 1. Avoid excessive heat, humidity, dust and vibration. Keep the unit away from locations where it is likely to be exposed to high temperatures or humidity — such as near radiators, stoves, etc. Also avoid locations which are subject to excessive dust accumulation or vibration which could cause mechanical damage. 2. Ventilation Allow a[...]

  • Page 4

    2 Contr ols and Functions ■ F r ont P anel TEMP PROTECTION POWER ON OFF AB CLIP SIGNAL 1 23 4 5 1 POWER switch and indicator This is the main POWER switch. Press to power ON the amplifier. Press again to power OFF. The POWER indicator lights up when the amplifier is powered ON. 2 TEMP indicator When the temperature of the heat sink exceeds 85 deg[...]

  • Page 5

    3 ■ Rear P anel SPEAKERS CHANNEL B CHANNEL A INPUT CHANNEL B CHANNEL A GG (BRIDGE) (PARALLEL) BRIDGE STEREO BRIDGE STEREO 4 3 2 5 CHANNEL B CHANNEL A ∞ 0 40 30 20 15 10 3 6 25 –dB ∞ 0 40 30 20 15 10 3 6 25 –dB 1 PARALLEL 4 SPEAKERS terminals For polarity in each mode, refer to the following diagram. • STEREO, PARALLEL mode SPEAKER[...]

  • Page 6

    4 ■ Modes: STEREO/P ARALLEL/BRIDGE BRIDGE mode In this mode, the CHANNEL A input signal will be output from the BRIDGE output terminals. In this case, use the front panel (channel) A volume control to adjust the volume. ■ SPEAKER IMPED ANCE In STEREO and PARALLEL modes, the minimum load (=speaker) impedance is 4 Ω . In BRIDGE mode it is 8 Ω[...]

  • Page 7

    5 Caution for Speaker Connection 1. Turn off the POWER switch. 2. Remove the cover attachment screw(s) and remove the protective cover from the speaker terminals. Screw 3. After removing approx. 15 mm of insulation from the ends of the speaker cables, bind the bare ends of the speaker wires in the corresponding speaker terminals and tighten the ter[...]

  • Page 8

    6 Rack Mounting ■ Mounting in an EIA standar d rac k If multiple high-power amp units are mounted in a rack with poor ventilation, the heat from the amps will cause the interior of the amp to become very hot, causing the performance of the amps to be impaired. When mounting amps in a rack, you must make provision for ventilation so that the heat [...]

  • Page 9

    7 ■ P ortable Rack Mounting The amplifier intakes cool air through the front panel and exhausts warm air out the rear panel. When mounting amplifiers in a portable rack, make sure the rear panel is completely open for ventilation. Front Air intake Air exhaust Completely open (Rear View) (Side View) SPEAKERS CHANNEL B CHANNEL A INPUT CHANNEL B CHA[...]

  • Page 10

    8 Specifications ■ Gener al Specifications C450 C320 C160 Power Output Level (Rated Power) 8 Ω /STEREO 460 W + 460 W 340 W + 340 W 160 W + 160 W 20 Hz~20 kHz 4 Ω /STEREO 620 W + 620 W 440 W + 440 W 200 W + 200 W 0.05% 8 Ω /BRIDGE 1240 W 880 W 400 W 1 kHz 8 Ω /STEREO 520 W + 520 W 370 W + 370 W 175 W + 175 W 0.05% 4 Ω /STEREO 720 W + 720[...]

  • Page 11

    9 ■ Block Diagr am Temperature CHANNEL B CHANNEL A CLIP CLIP SIGNAL Bch Power Amp PC Limiter Ach Power Amp PC Limiter SPEAKERS (BRIDGE) (PARALLEL) CHANNEL A CHANNEL B CHANNEL B CHANNEL A INPUT PROTECTION TEMP (Heat Sink) Sensor Circuit Protection STEREO PARALLEL BRIDGE G G SIGNAL ■ Dimensions 15.5 61.2 292 55.2 308 88 H:103.5 W:480 424 45 4.4 D[...]

  • Page 12

    10 ■ P erformance Gr aphs Mode:STEREO Both ch Driven RL=4 Ω , f=1kHz Mode:STEREO Both ch Driven RL=4 Ω , f=1kHz Mode:STEREO Both ch Driven RL=4 Ω , f=1kHz C160 C320 C450 Output Power [W] Power Consumption [W] Power Consumption [W] Output Power [W] Output Power [W] Power Consumption [W] 1k 100 10 1 5k 1k 100 20 20 100 1k 5k 1 10 100 1k 1k 10[...]